Commit 9ca66afe authored Sep 29, 2022 by Maxim Mikityanskiy Committed by Jakub Kicinski Sep 30, 2022

xsk: Expose min chunk size to drivers



Drivers should be aware of the range of valid UMEM chunk sizes to be
able to allocate their internal structures of an appropriate size. It
will be used by mlx5e in the following patches.

Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
CC: "Björn Töpel" <bjorn@kernel.org>
CC: Magnus Karlsson <magnus.karlsson@intel.com>
CC: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

parent 0f5ef005

include/net/xdp_sock_drv.h

+3 −0

Original line number	Diff line number	Diff line
		@@ -9,6 +9,9 @@
		#include <net/xdp_sock.h>
		#include <net/xsk_buff_pool.h>

		#define XDP_UMEM_MIN_CHUNK_SHIFT 11
		#define XDP_UMEM_MIN_CHUNK_SIZE (1 << XDP_UMEM_MIN_CHUNK_SHIFT)

		#ifdef CONFIG_XDP_SOCKETS

		void xsk_tx_completed(struct xsk_buff_pool *pool, u32 nb_entries);

net/xdp/xdp_umem.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -19,8 +19,6 @@
		#include "xdp_umem.h"
		#include "xsk_queue.h"

		#define XDP_UMEM_MIN_CHUNK_SIZE 2048

		static DEFINE_IDA(umem_ida);

		static void xdp_umem_unpin_pages(struct xdp_umem *umem)